Glass cutting apparatus



April 12, 1932. R. P. CALLARD ET AL GLASS CUTTING APPARATUS Original Filed oct'. 20, 1925 INVE NT DRE; Poberf P Ca/lard. dohn H. Mal/en M .9

ATTORNEY.

Patented Apr. 12, .1932

untrue STATES- PATENT rein ROBERT E. CALLARD AND JOHN H. MOLLER, 0F CHARLESTON, WESTQVIRGINIA, AS- SIGHOES T0 LIBBEY-OWENS-FOBD GLASS COMPANY, OF TOLEDO, OHIO, A'GQRIEORA- TIGN OF OHIO Original application filed October 20, 1925, Serial No. 63,623. Divided and. this application filed January 13,

1926. Serial No. 80,878.

whereby the ends of said apparatus will re-- main parallel with the longitudinal axis of the sheet.

Another object of the invention is'to reduce as near as possible edge waste ordinarily incurred when cutting lights of glass from a continuously moving ribbon of glass.

Other objects and'advantages of the in vent-ion will become apparent during the course of the following description.

In the drawings wherein like numerals are employed to designate like parts throughout the same, i

Fig. 1 is a plan view of the apparatus,

Fig. 2 is a fragmental section taken on line 22 in Fig. 1, and

Fig. 3 is a fragmentalsection taken on line 3-3 of Fig. 1. I

This invention was first disclosed in our copending application. Serial No. 63,623, filed Oct. 20, 1925, of which the present application is a division. This invention is particularly well adapted for use in connection p with the Colburn Patent 1,248,809, granted December l, 1917, wherein a ribbon or sheet of glass is annealed in a horizontal leer and passed on a cutting table in a horizontal position. Of course this improved apparatus is i not necessarily limited to the constructioi'l shown in the Colburn patent.

In the drawings the numeral 3 refers to parts of the stationary structure of the cutting table 4;, on which the track 5 is mounted.

Supported upon this track is atruck 6, car

rying a glass scoring device '1 and breaking device 8, more fully dlsclosed in our copending application above referred to. Suitably attached to the truck6 are pinions 9, which freely operate in racks 10 and 11 attached to the track 5. -The rack 10 is stationarily mounted on the rail 5, while the' rack 11 1s movable back and forth longitudinally by the jack screws 12. so when it is desired to line up both ends of thetruck it is necessary to ad- 'just'only the one rack 11 by the jack screws 12, and after proper adjustment is'attained, it may be locked in position by the thumb screws 13. A detail of the thumb screw locking means is shown in Fig. 3. During the scoring and breaking ofthe sheet 14, there is a possibility of particles of glass or dirt becoming lodged between the teeth of the racks l0 and 11, and thus causethe ends of the truck 6 to become out of line. In order to prevent this possibility, guards '15 are suitably placed above the racks and 'pinions.

Heretofore, the ribbon has been divided into sheet lengths by an operator positioned at the end of the leer and alongside of the cutting table, the type of out being dependent upon the skill of the particular operator.

If the score is not parallel to the preceding out or at right angles to the edges of the sheet,considerable waste results when the sheet is squared up for commercial use; It,

is believed that the improvements covered by the present invention will overcome this objection as the cutting and breaking device travels with the moving sheet and parallel with its edges, being held in parallelisnrby the rack and pinion arrangement above described.

In the operation of the present invention the continuously moving glass ribbon 14: passesfrom the annealing leer onto the cutting table 4. The ends of the truck are then made to travel parallel with'the glass ribbon edges 16 and 16 by the rackand pinion mechanism'previously described After a predetermined length of the glass ribbon is meas ured 05 by the gauge stick 17, attached to the scoring means, a sheet is separated from said ribbon by the scoring and breaking means covered in our copending application,

to I thus producing asheet whose opposite edges 7 are parallel and whose adjacent edges are at right angles.

It is to be understood that the form of the V invention herewith shown and described is to be taken as the preferred embodiment of the same, and that various changes in the shape, size and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims. 5 Claims:

1. In glass cutting apparatus, a moving table for supporting a moving sheet of glass, a truckarranged in proximity to said table, a cutter guide carried by the truck and movable with the sheet, pinions attached to the truck, and racks engageable by said pinions for supporting said truck, one of said racks being adjustable longitudinally of itself to permit the glass to be separated perpendicular to the sheet edges.

2. In a glass cutting apparatus, a movable table for supporting a moving sheet of glass, a truck carrying a cutter guide and breaker arms, movable as a unit by the sheet, tracks 29 secured to the table for supporting the truck,

pinions attached to the truck, racks attached to the respective tracks for cooperation With the respective pinions for properly guiding the truck thereon, and means for adjusting 255 one of the racks longitudinally of itself to permit the cutter guide and breaker arms to advance in parallelism Withthe longitudinal axis of the moving sheet.

3. In glass cutting apparatus, means for A0 supporting a sheet to be cut, a truck arranged in proximity to the sheet supporting means, a cutter guide carried by the truck, interconnected pinions attached to the truck, racks engageable by said pinions for supporting 30 aid truck, means for adjusting one of said racks longitudinally of itself for properly lining up the opposite ends of said truck,

means for locking the truck in adjusted position, and a guard for protecting the racks 0 and pinions from broken glass, etc.

4. In sheet glass cutting apparatus, a table for supporting the sheet, a guide for a scoring tool extending across the sheet, means associated with the cutter guide for breaking the glass after it has been scored, and means carried by said table for supporting the cutter guide and breaking means said last-named means having portions interengaging with the cutter guide and being adjustable longitudinally of itself to effect lining up of the opposite ends of said cutter guide.

Signed at Charleston, in the county of Kanawha, and State of Vest Virginia, this 7th'day of January, 1926.

ROBERT P. CALLARD.

JOHN H. MULLER. 

